Personal alarm system for emergency, comprises radio-frequency receiver, position determining unit, transmitter for sending information through satellite, activator, battery, where server receives information

摘要

The alarm system comprises a radio-frequency receiver, a unit for determining the position, and a transmitter for sending the information of the position through satellite. A portable personal activator is carried by the group members and a battery is provided. An alarm signal is transmitted when an activation unit is activated. A server receives the satellite information and a central station manages the generation of information. The receiver periodically sends the information to the server and is displaced to a specific distance, when the alarm signal is received.